Horizontal thrust-bearing.



A. KINGSBURY.

HORIZONTAL THRUST BEARING.

APPLICATION FJLE'") MN. 9. 1915 v Patented Jan. 7, 1919.

2 SHEETSSHEET 1.

IN VENTOR.

.l illll.

WITNESSES:

HIS ATTORNEY IN- FACT A.-KINGSBURY.

HORIZONTAL THRUST BEARING.

APPLICATION FILED MN. 9. I915v n,

' Patented Jan. 4,1919.

SHEETS-SHEEL 2 I i INVENTOR.

HIS AT "ORNEY IN FACT "l3 e FEW F l lu icuuinl 1 IZIHG'SBUZELY, F PITTSBURGH, PENNSYLVANIA HOFELL'E-ON PAL THRUST-BEARIN G.

Specification of Letters Patent.

laten'l'cd lan. '3, 19359.

cating such as are. adapted to sustain the axial thrust of horizontal shafts.

Thrust bearings such as those set torth 111 my Patents Nos. ill-72%, 1,102,276, and

I 1,2l2,9l8 are adapted to automatically lubricate the thrust bearing surfaces provided oil is s 'pplled to the several. bearing shoes. Tins 1S readily aecouuilishetl by ilooding the entire hearing when the axis of the shaft is vertical, but special provision for transfer ring; the oil to the proper points nulst be made when the bearings are used with shafts which are substantially horizontal.

Une object of my present inuention is to provide a horizontal thrust bearing that shall embody means for supplying oil to the several bearing shoes and for automaticailly circulating: the oil within the housing whereby the hot. oil which comes from the bearing surfaces may be mixed with relatively cold oil before it is again used.

(lther objects and advantages of my in vention will be forth hereinafter. and in order that my invention. may be thoroughly understood. l will now proceed to dc. the same in the following specification and then point out the novel features thereof in appended claims.

Referring to the drawings,

'l i qjure l is a longitudinal section of a bearing; arrangml and constructed in accordance with my invention.

Fig. 2 is a transverse sectional elevation of the same bearing a. ten on the line 2-2 of Fig. l.

Fig. 3 is a detail view showing the pro-' polling slots with which the thrust collar provided.

A thrust collar having a. modified propelling strut ore is liown in. Fig. l.

Figs. and (3 are views correspoiuling respectively to 1 and 2. of a n'iodiiied bearing smictnre which alsoeinhotlies my invent-ion.

- of the succeeding;

llaving special reference to Figs. 1 to 3 of the drawings. the structure here shown comprises a shall it) to which a collar ll is secured by means of a nut 12. A stationary housing 13 surrounds the shaft collar and is provided with tiltably supported bearingshoes H- which engage the. thrust bearing surfaces of the collar and support the end thrust of the shaft.

The housing comprises a hollow base, which constitutes an oil reservoir 15, and a hollow cylindrical box which extends into and communicates with the reservoir and is coaxial with the shaft. Its inside diameter is only slightly greater than the outside diameter of the collar which is located within it.

The collar has an annular groove 17 which is centrally located and divides the outer edge of the collar into two parts. These parts are provided with inclined lateral slots 1?) and 19 as clearly shown in Fig. '3.

The arrangement of parts is such that -when the reservoir of the housing is tilled with oil to substantially the level 'iu, the lower pa rt of the collar is immersed. With the shaft in a horizontal position the. oil level cannot be raised any higher without likelihood of the oil lowingout around the. shaft although the housing is provided with wiper rings 20 til. it is therefore evident that. while the lower bearing shoes are immersed in oil. the upper ones must have the. oil supplied to them by some means in order to keep them properly lubricated. in the structure illustrated the annular groove and the inclined slots constitute that means as more fully set forth liercinziftcr.

The cy t indrical hex of die housing is provided \l'ltl'i openings :Z2-ilfii-2lof which the opening is directly opposite the an nular slot. in the collar.

Before describing the modified structures ares, the opeation of the structure alrclauy described will be discussed. Assuming that the shaft; is rotating in a clockwise direction. as shown in Fig. 2, and that the oil is maintained at the levelv 66 as already explained, the oil will be carried up by adhering to the exposed surfaces of the collar and will be thrown outwardly through the inclined slots as indicated by the arimvs in Fig. 3. Theswslots are preferably helical in form although it is only important that the sides marked. -26 should be approximately helical if the collar rig is to more in qhc direction indicated by the arrow 27. f the shaft is likely to rotate in either direction the slots shouicl have the form shown in Fig. 4, both sides being helical in form. As the oil. escapes from the slots it must flow radially imm'd through spaces 28 between the shoes, as indicated by urrows in Figs. 1 and 2, and some of it is carried bet-wecn the bearing: surfaces by reason of the character of the hearing and the mounting of the shoes.

The shoes are each mounted on a pivot, 29 and the group of shoes on each side of the collar is supported on u. wolf-adjusting ring- 30. This ring has u spherically curved pi jcction which is seated in u base 31.

The details of the shoes and their mounting are covered in my previous patents to which reference has ulrezuly been miracle, and

- as they form. no Pill't of my present invention further discussion is believed to he unnecessary.

The spaces 28 are formed by the opposed faces of adjacent shoes and the, opposed faces of the self-adjusting ring- 30 and the coi i211" l1.

The space. 28 open into an annular space 32 between the bore of the rings 30 and file surface of shaft: 10 and nut sleeve 1. Spaces are provided wi h annular enlargements 36 which communicate by means of holes 37 with annular spaces 38. These connect. with the reservoir by openings anti The oil thus flows through the annular spaces heiwemi the shaft anti iihe rings and downward beyond the rings int the hose through the, opening and 24:. A circulation of oil is thus established not only through the, passages between and adjacent to the shoes but also within the hotly of oil in the base The hot, oil which is forced out of [the bearing surfaces is also mingled with the circulatin oil and is carried lmCl K into the base. It is therefore cooled and repaireil to be used again. In order to fuci hate the cooling of the oil in the reservoir any faultuhlc hcut transferring device may he used, inlet un outlet pipe connections; being effectiul ut 1323 and 3+.

Referring: to Figs. :3 anti 3 the structure hore shown is fill'flili'iIi iii many respects i0 that or" the previous-1 figures, {I'll-Ll; corrcaponcilog parts are designated by the same reference c aracteiz's. The collar in. this coiisitruction not grooved or sloited but the housing is provided with u re ess at the top which cons itutcs u chmu ier uucl COllGCiZz] oil which is carried upwu lly on the exnoserl surfaces of the, mlhir. A portion of the Oil from this chumiuir 1733595 down-wm'dfly through the narrow opening 36 (see F g. (i) but u 'rcutur portion of it {lows (town .rw lr over the sides oi. the collar against tlr rmliail crlgfeuot' the hearing surlnces on {lCt'w 'll, of the locuiiou of lhe shoulder 37 of the icccss.

ing structure is set forth and dose-r in detail in my copendmg apphcahon No. 1319 filed. of even clato herewith.

The cylindrical housing box pro-vio a with inlet opening 40- whichcorrespr 'ie to the opening 23 and "two pairs of opcuiiigix @1 which are slightly below the surf-rice the oil in the, base and open into h the respective sides of tho (i0llfi'ffi8 shown in li i;

bearing surfaces, puss o one of the openings l1 into Through the other set (if openings the box as inclicnzed h A circulation of" oil izhi-ough the base as O 4 mill.

n; thus (L Va efitzihlifi-hcfi well as through 'ihh spaces around the shoes.

As in the construction shown in Figs 3. and 2, the oil the reservci zmiy ho coolel by any suitahic Att/cnlbioh rliimwerl l o hhaii in both the struezures shown herein housing is constructed to closoiy emhrac-si the peripiv erul. surface of the thriurf eoliar so to leave only a narrow annular oil passage iwtween the housing and the said surface; and that; the oil which is carried up through. this annular passage by the rotation of the sailor is do flectcd laterally to each Ride of the collar by transverse projections or Pli'fif; formosi upon either the hou. 'iig member or tho collar member; and is by the nci-iou of these ribs directed against The e lge the hearing shoes and caused to firm lown'wariily o lor their edges towuril the center of the hearing.

In the construction filN'iYvZ'l in Fi 4 f y. to 4- the hr's rul dellechoii of the oil againstthe "he shoes is ciiez'ted by the trims be generally desi ated as deflector elements or as lateral de ectors; and they perform their desired functions without any actual scraping action or any direct contact between the relatively fixed and relatively rotating surface on which they are positioned and in conjunction with which they operate.

While the bearing structures shown and described herein are arraifgulto provide for a radially inward How of the oil across the thrust bearing surface betwecnfland around the bearing'shoes, this feature imitself is not a part of my present invention and is covered in my patentaeissue (original 1,201,057) of which the-original application we copending with this application.

What I claim is:

1. The combination with a horizontal shaft and a collar thereon having a thrust surface and a substantially cylindrical outer surface, of thrust bearing members, a hollow cylindrical housing surrounding the cylindrical surface of the collar to form a narrow annular passage, and a fluid containing reservoir into which the bottom of the collar extends, one of the parts which cooperate to form the narrow annular passage be-' ing arranged to embody means for causing the liquid taken up by the collar when rotating to flow'lat erallyat the top of thecollar fand downwardlyio lubricate the bearing members, i

2/ The combination with a horizontal shaft and a collar thereon having a thrust surface and a substantially cylindrical outer surface, of thrust bearing members, a hollow cylindrical housing surrourfdin-gtlie cylindrical surface of the collar to form a narrow annular passage, and a fl iidcontaining reservoir into which the bott m of the collar extends, said housing being recessed at the top to form a chamber in communication with the annular passage.

3. A horizontal thrust bearing comprising a hollow cylindrical housing, an oil reservoir for flooding the lower part of the.

housing, a horizontal shaft extending into the housing, and a thrust collar within the cylindrical housing on the. shaft, said collar and housing being formed to provide a narrow annular oil 'passage around the collar, and" embodying means forfcausing the oil taken up by the collar when rotating to flow laterally at the top of the collar and downwardly to lubricate thethrust bearing surfaces. a

4. In a thrust bearing, the combination with a rotatable member having a substantially horizontal axis, a thrust surface and a circumfcrential surface; relatively station; ary thrust bearing members cot penal ing with the thrust sin face; an oil cham )Ol illiO which radial thrust surface and a cit-ciimferential member and adapted to remove the oil from the surface thereof and direct it onto the bearing surfaces.

6. A thrust bearing comprising a rotatable thrust member having a circumferential surface, a substantially horizontal axis,,and a radial bearin surface; a tiltable bearing shoe cooperating with the thrust surface; an oil containing reservoir into which the rotatable member extends, and transverse deflector elements cooperating with the circumferential surface for latcrally' diverting the oil carried upwardly on the rotatable member and directing it onto the bearing surfaces;

7. In a thrust bearing, the combination of a shaft having a thrust collar; an oil well in which the lower portion of the thrust collar extends; a tiltable bearing shoe cooperating with the tlirust collar; and

means for deflecting oil from the outer sur-- face of the collar as it rotates and directing it against the sides of the bearing shoe.

8. In a thrust bearing the combination of a substantially horizontal shaft having a radial'thrust surface and a circumferential oil carrying surface; relatively stationary bearing shoes cooperating with the thrust surface; and deflecting means for discharging oil from the circumferential oil carrying surface and directing it to the hearing shoes.

9. In a thrust bearing thecom' ination of a substantially borizontal shaf haying a oil carrying surface; relatively stationary bearing shoes cooperating with the thrust surface; and a stationary deflector element arranged in close proximity to the circumferential surface of the collar and adapted to collect, the oil therefrom and deflect it. onto the bearing surfaces.

In witness whereof, I haye hereunto set my. band in the prcscnceof "wo subscribing witnesses, this 4th day of January, 191-7.

ALBE 'l K INGSIH'HY. lVitnesses: P7

(I. W. Mctillnn, v M. It. M.\(fl\IILLAN. 

